We got the lower retaining walls formed last weekend. Those and the window well are about ready to pour. I am building a water feature between this wall and the window well in the background, with a 3' waterfall over the upper wall.
We installed 3/4" chamfer strips to make beveled corners on the concrete. These walls are 3'
high, and the next walls are ~3.5' to bring the grade up to match finish floor.
The back wall is a little longer.
The 45 wall section on the downhill side adds strength to the structure. Concrete itself has little strength in tension and great strength in compression.
The plywood I salvaged from the SR520 floating bridge job, 11 years ago. It is beastly heavy 1" HDO form plywood.
I carefully peeled off the 4x6 strong backs ( pieces there in front of forms ) from the plywood and picked up and stacked the ply on dunnage with this.
they were paying $18 a ton to get it disposed of at a pellet plant nearby. I loaded out 3 million pounds of wood with the excavator and 1.5 million of steel in a few weeks.